This file is indexed.

/lib/systemd/system-shutdown/apcupsd_shutdown is in apcupsd 3.14.14-0.3.

This file is owned by root:root, with mode 0o755.

The actual contents of the file can be viewed below.

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#!/bin/sh
# apcupsd: kill power via UPS (if powerfail situation)
# (Originally from Fedora.)

# See if this is a powerfail situation.
if [ -f /etc/apcupsd/powerfail ]; then
  echo
  echo "APCUPSD will now power off the UPS"
  echo
  /etc/apcupsd/apccontrol killpower
fi